<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>05-字体标签练习</title>
</head>
<body>
<font size="6">你好这个世界</font>
<font size="3" color="red">,我很热情</font>
<font size="1" color="blue">,还有些犹豫</font>

</body>
</html>